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Beginners - February 2014 (Page 47)

I am trying to create an application where numbers correspond with specific points on an image, and when a user enters a number, a circle is drawn on the point ...

[2 replies] Last: Yeah, I would like to draw an image on the screen or in database. As f... (by EisenhowerPDF)

by nn208

Declaring a function

I want to define the following function: f(x)= sin(a*x/(1+x^2))*atan(bx)+atan(x) where a,b are constant parameters (e.g 3,2) #include <iostream> #includ...

[2 replies] Last: Compiling it to be sure is your best bet, but yes, this looks like it ... (by NZheadshot)

by ccdare

What decides the operation sequence of a class Operator Overloading?

class test{ ... public: ... test operator+(const test &a)const;//#1 const test & operator+=(const test &a);//#2 std::ostream & operator<<(std::os...

[2 replies] Last: Evaluation depends on the operator precedence (usually left to right),... (by Smac89)

by fahmankhan75

always getting zero on my counter variable

I don't seem to understand what I'm doing wrong. My guess is that somehow my string is not being read from the input file. When I complie and run this code I ge...

[7 replies] Last: It might be that visual studio has made your program to be line-buffer... (by Smac89)

by nn208

Evaluating the precision of the difference of 2 numbers

As you will understand I am an absolute beginner and therefore your help is really appreciated. The problem asks to write a program that contains a function f(d...

[1 reply] : Of course it would not work. You have not even called IsEqual in your ... (by TX9200)

by chickens7

Base/Subclass constructor problems :(

Hello anyone who dares to read this, I'm studying inheritance in c++ and there's one particular issue i'm having trouble with. I've wrote this small piece of c...

[2 replies] Last: Thanks you very much for the speedy reply, I had no idea about the vir... (by chickens7)

by mdeeza

help with a stats class

Hello, I'm currently working on a stats class project for my data structures class, we've been given a header file with pre/post conditions (located below) and ...

[1 reply] : How do i pass a stats a sequence of numbers in my driver program? ... (by IceThatJaw)

by Codebot

Wont show me the input?

It wont show me the input. if (input == "yes") { cout<<"I know how you feel"; cin>> input; } else if (input == "no") { cout<<"Test"; cin...

[1 reply] : This is what you are doing in plain English. Try to spot the error. I... (by IceThatJaw)

by htx281

Do-while loop

I need help with a project for my programming class. This is what he is asking from me. "Prompt the user to choose what type of input (wavelength or frequen...

[3 replies] Last: Ahhh simple mistakes.. thank you! (by htx281)

by Karmaslapped

Trying to return to start or continue program

Hello, I am currently writing a program for my Programming class. I know that homework questions are not supposed to be asked, however what I am trying to do is...

[2 replies] Last: That works, thank you (by Karmaslapped)

by Codebot

Why does it say no previous if

if (input == "yes"); { cout<<"I know how you feel"; cin.get(); } else if (input == "no"); { cout<<"Test"; cin.get(); cin.get(); }

[4 replies] Last: Try this: if (input == "yes") { cout<<"I know how you feel"; ... (by closed account EwCjE3v7)

by fi50

Outputting data in a Linked List

Hey. I'm trying to get this linked list to work in a way that allows me to output the values at line 34, I've tried the standard deference operator to no ava...

[3 replies] Last: Cheers guys. I've managed to get it working now. (by fi50)

by ABMBadman

Having trouble finding errors

I'm supposed to create a program that calculates maximum deflection by first getting the user input of height, length, base, and weight. Once the maximum deflec...

[2 replies] Last: The lines like this make no sense: cin >> length << endl; Either ad... (by yulingo)

by liz510019

Fraction Class

I am working on a c++ assignment for a class and the perimeters were to create a fraction class described below and then test and demonstrate the methods. What ...

[2 replies] Last: It looks like the function double toDecimal() const; would convert t... (by Nogroth)

by KennySnook

trouble with if, else if statements in function

I can't find out what is wrong with my if and else-if statements in my function at the bottom of my code. It always reads that the withholding rate is 20% no ma...

[2 replies] Last: Hi @KennySnook, you are using the assignment operator = instead of t... (by eyenrique)

by weslleymurdock

Arraylist in cpp

Hi guys. I have a curiosity to be remedied. I wonder if C + + has some library that implements an infinite array, as has the arraylist in java class, or vector...

[2 replies] Last: Thanks, my friend (by weslleymurdock)

by caleno87

NEED HELP PLEASE!!!

I'm new to C++ and wanted some help please. Can anyone tell me where and how to put a table that organizes the output of the array in 5 columns. Thank you H...

[1 reply] : Sorry i missed a little piece. cout << "\nDo you want to see the con... (by caleno87)

by justin00

cout

I have tried to answer this thirty different ways, and I am pretty sure I just don't know exactly what the question is asking me to do.. Two variables , num...

[3 replies] Last: Okay, I got it, thanks. Apparently it wanted this: std::cout << num... (by justin00)

by SorinAlex

Who invented conio.h ?

Hi i have i question who originaly invented conio.h library ?

[3 replies] Last: [quote=SorinAlex] I didn't knew that lattice was actually microsoft. ... (by Catfish666)

by alexandruKis

SFML 2.1, I want do display a sprite,but I get an unhandled exception.

Hi,I'm sorry I come to you again,cpluplus.com users,but I really can't figure out what's wrong. My short code is: #include <SFML/Graphics.hpp> int ma...

[8 replies] Last: Yes,i've used "sfml-xxx.lib" instead of "sfml-xxx-d.lib". Now it work... (by alexandruKis)

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